Black Widow: Natasha Romanoff is usually portrayed as having long-toned yet shapely legs that are shown through her costumes (particularly a form-fitting cat suit).
Captain Marvel: Carol Danvers has long legs and while she prefers punching, she's capable of using them. They were emphasized in her original Ms. Marvel leotard costume, and she wears a skintight outfit as Captain Marvel.
Scarlet Witch: Wanda Maximoff has long-toned yet shapely legs that are highlighted through the outfits that she wears (particularly a red bathing suit with a pink body suit).
She-Hulk: In her She-Hulk form, Jennifer Walters is seven feet tall, and a good majority of that height is in her gorgeous green gams.
Gwen Stacy and Mary Jane Watson, who both serve the role of the main love interests of Peter Parker, have very gorgeous long-toned yet shapely legs.
Queen, one of Spidey's enemies, wears a beautiful elegant black dress that shows off her legs to everyone. She has also shown to be adept with kicks in combat, though this isn't her main style of combat, catching Spidey off guard with a kick to the leg in their first fight and kicking him across the face twice.
Thunderstrike: Marcy wears a fancy red dress to the opening of her health salon, but to show her healthy figure, the dress has a slit skirt and is form fitting. Even her white fur jacket is cut to emphasize her hips and legs.
The Unbelievable Gwenpool: Gwenpool wears a Leotard of Power that made her complain to her stylist that now she has to shave her legs frequently. Although the fanservice part of the trope wound up in the other gender: when Gwen made the M.O.D.O.K. mercenaries wear replicas of her suit (turning into what she called "Poole Boys"), an old lady was stunned by all those muscular legs on display.
Psylocke's signature 90s costume was essentially a thong leotard with boots and lots of leg straps, focusing on her legs and butt through the combination of costume and lots of ninja kicking.
Rachel Summers was originally emaciated from growing up in a Bad Future concentration camp, but returns in Excalibur as a Statuesque Stunner after going through Mojoverse's Body Shoppe. She often demonstrates the change with her skintight combat outfits and Stripperiffic civilian clothes that involve many miniskirts, with her legs often getting particular focus. Her early 2000s return as Marvel Girl tones down the statuesque part, but keeps the miniskirts.
Rogue is known for having Curves in All the Right Places whether she's wearing skintight spandex, short shorts, or Savage Land rags. Her bust is sometimes de-emphasized with jackets or cowls while keeping her legs in focus.
Storm is a REALLY TALL dame, and her original costume emphasizes her legs through the combination of a leotard and thigh-high boots, paired with a cape that often leaves only her face and thighs exposed. Later looks inspired by this show even more leg.
